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J. E. OOWDERY, OF WHEATLAND, IOWA, ASSIGNOR TO HIMSELF AND A. S. BENSON, OF THE SAME PLAGE.

Letters Patent No. 70,966, dated November I9, 1867.

IMPROVEMENT IN TRY-SQUARES.

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T() ALL WHOM IT MAY CONCERN: y

Be it known that I, J. E. COWDERY, of Wheatland, in the county of Clinton, and State of Iowa, have invented a new and useful Improvement in Try-Squares; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same,l reference being had to the accompanying drawings, forming part of this specification.

This invention relates to an improvement in try-squares ;v and consists' in a blade held to a cross-piece by a pivot, and furnished with a finger pointing to a graduated scale. A spring o n thc opposite side of the pivot works in a circular rack on the cross-piece, assisting to hold the blade. Aslot in the handle enables it to be held in the hand while using the plane. In the accompanying drawings- Figure I is a top view of my improved try-square, and

Figure 2 is a bottom view thereof.

Similar letters of reference indicate like parts.

A is the handle, having the slot or mortise a to receive the lingers. B is the cross-piece or arm. C, the blade furnished with the pointer c, and pivoted to 'the cross-piece at b. D is a graduated scale,lon which the pointer c indicates the inclination. E is a circular rack on B, in which works the spring e, also pivoted at b.

Having thus described my invention, what I claim as new, and desireto secure by Letters Patent, is-

The circular rack E and spring-pawl e, when combined with a pivoted blade to a try-square, in manner substantially as and for the purposes described.

' J. E. OOWDERY.

Witnesses:

GEORGE WrLsoN, Jr., RUEL R. GEORGE. 

